Locking-nut.



No. 825,085. PATENTED JULY 3, 1906.

V L. STEINBERGER.

LOCKING NUT.

APPLICATION FILED SEPT. 3051903 LWTNESSES: I INVENTOH LazzzZ/Maz'nwyer A HORNE rs member 16, as

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LOCKING-NUT.

Specification of Letters Patent.

Patented Jul' 3,1906.

Application filed September so; 1903. Serial No. 175,134.

To (ZZZ whom it may concern.-

Be it known that I, LOUIS STEINBERGER, a citizen-of the United States, and a resident of the city of New York, borough of Brooklyn, in the county York, have invented a new and Improved Locking-Nut, of which the following is a full, clear, and exact description.

My invention relates to lockingmuts, and more particularly to a form of locking-nut admitting of general use and peculiarly aplicable in instances where it is desired to oek a nut used in electrical fixtures and especially for the purpose of securing wires in position.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1' is a vertical section through a locking-nut of my invention, showing two forms of nut each provided with a lock, the nuts being separated. Fig. 2 is a somewhat similar view, but showing the nuts as tightened upon the bolt; and Fig. 3 is a perspec tive view showing the form 3 of the nut.

A bolt 1 is provided with a head 2 and is threaded, as,shown. Revoluble nuts 3 i are threaded internally and screwed upon the bolt 1. The nuts 34 are provided with slots 5 6 7, whereby portions or tongues 8 9 10 are spacedapart from the main body. These portions 'or tongues are each provided with smooth apertures 11 12 13, being thereby clear of the threads 15 of the bolt. A wire 14 may be clamped between the two nuts, as indicated in Fig. 2. The nuts 3 4 in their relations to the bolt 1 are somewhat askeW- that is to say, the normal plane of the nut crosses the axis of the bolt in a direction which is not quite at right angles to the axis of the bolt. This can readily be seen by a glance at Fig. 1. The result is that when the nut 3-i's screwed down upon the members 16 to be clamped the tongue 8 engages the upper member 16 and exerts a gentle pressure upward, so as to lock the-nut 3 rigidly upon the stem of the bolt. The nut 3 being -now turned is forced downward, so that its bottom face becomes flush with the upper indicated in Fig. 2. N o other agency is needed to hold the nut rigidly in po sition, for the reason that the tongue is resilient, and the aperture 11 being smooth and larger than the threads L5 of.. the bolt the of Kings and State of New I tongue 8 merely bends enough to engage its l lower lat face throughout its entire area 1 against the upper surface of the member 16.

i The upper surface of the tongue 8 is engaged l by the body portion 3 of the nut at substantially the same moment that the lower face of the tongue 8 assumes the position indicated in Fig. 2. If desired, the other nut 4 may now be placed upon the bolt and run down upon the thread, so as to l()('l wire between the upper portion of the nut 3 and the lower portion of the nut 4. The upper nut will hold the lower nut still more rigidlyin position.

It will be observed that this self-locking nut is not dependent upon an auxiliary part or parts except the bolt and the surface or wire to be clamped. No extraneous mechanism is needed to enable a person to loosen the nut when it is desired to remove the same from the bolt. The nut when in position upon the bolt binds with great but uniform pressure upon the object to be clamped and is thus held securely against accidental or undesirable rotation of the nut. It may be applied in any position and practically in any place and upon any work or to any structure where bolts provided with revoluble nuts may be needed.

It will be noted that this nut has the quality of yielding, owing to the resilience of the upper and lower tongues. This feature is of great importance, as it avoids all necessity for bending the bolts and also relieves the threads from undue strain. This feature is of pe'euliar importance in cases where the parts held together are subjected to sudden jars, as in'rail-bolts of'fisl1plates and in all machinery subjected to strain.

The operation of the self-locking nut is so simple as to be self-evident even to the most inexperienced person. It is first threaded upon the bolt in the ordinary manner and then screwed down upon the article to be held thereby. Its own shape suggests its uses.

It will be noted that the-plane of the nut hereinafter mentioned means the plane drawn through the line a b of Fig. 1, this plane being inclined or oblique relative to The general plane of the nut is therefore slightly askew or oblique relative to the plane forming a right angle with the axis of the bolt.

In case it is desired to secure a wire H the horizon, assuming. the bolt to be vertical.v

upon the stem 1, the nut 4 may be closed down upon the wire, asindicated in Fig. 2. The tongues 9 10 thus clamp the wire from above and below, giving it a comparatively resilient fastening of integral metal and thus affording a good electrical connection.

Having thus described my invention, I

vclann as new and desire to secure by Letters Patent In a locking-nut, the combination of a revoluble body portion provided with a cylindrical threaded aperture and with resilient tongues, one for engaging a surface to be clamped and the' other being free, in combi- I nation with mechanism for engaging said :5 tongue thus left free, the general position of said revoluble body portion being askew relatively to the axis of said cylindrical threaded aperture.

In testimonywhereof I have signed my 20 name to this specification in the presence of two subscribing Witnesses.

LOUIS STEINBERGER. l/Vitnessesi WALTON HARRISO EVERARD BOLTON MARSHALL. 

